Improved die foe mahig clevis-blanks



@eine tatre @anni /ffire Letters .Patent No. 81,380, dated VAugust25,1868.

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IMPROVBD DIE FOR MAKING @LEVIS-BLANES.

titte .Simula referat tu iu tlgse tcttett atgut :un `mating ,part-nf itsstmt.

TO ALL WHOM IT MAY C'ON CERN:

Be it known that I, JACOB Karren, of Cleveland, in the county ofCuyahoga, and State of Ohio, have invented certain new and usefulImprovements in Dies for. Making ThreeHorsePlow-Clavises and I do herebydeclare that -the following is a full and complete description of thesame, reference being had to the accompanying drawings', making part ofthis specication, in which-- 'Figure 1 is a side view of the dies forforging one part of the clevis.

Figure 2 is a side view of the die used in forging the other part.

Figures 3 and 4 are top views of the dies.

Figures 5 and 6 represent the gauge.

Like letters of reference refer to like parte in the different views.

My invention relates to dies for forging a three-horse plow-clevis, inorder t o save the trouble and expense of making them in the ordinaryway, and which, also, gives them a uniform sizeand shape, whereas theusual mode of making `them they are uneven and rough in appearance, andunequal in sire;v also, by this manner, they are more quickly, cheaper,and better made. The manner in which they are constructed is as follows;

A, iig. 1, represents the bottom die, which is connected with the anvil.B is the upper die, which is attached to the head of the trip-hammer.Abar of iron, of the desired size and dimensions, is heated and placedin the cavityof the lower die, and is beaten or swagod into shape by theupper, in concert with the lower one.- In beingforged, it will usuallyspread out laterally, This can be remedied by placing it in theflattener C of the dies, and, bythe action of the upper die on thelower, it is formed in the desired shape, when it can again be placed inthe dies, and again hammered' between them. Thus alternately the iron iscompressed or forged between the dies A and B and iiattener C, until thedesired form and configuration of one part of the clcvis arc obtained. V

When this end of the clcv'is is formed, it can be cut from 'the bar atthe length desired, and the unformed.

end bc placed in the die D, the upper die,-D, being attached to thehammer the same asin the former case;'

thus thisl end is forged into shape in substantially the same manner asthe end before described.

Its length isrmeasured by placing it in the ygauge E. The two ends, aand a', tit in the cavities b 6.', as indicated by the dotted lino ciirg. 6. A I

It is important that the three-horse plow-'clevis bc of uniform sizeanddimensions. This cannot be accomplished in the ordinary manner, hencethe forging is always donc with reference to this gauge or tcmplct.

The clcvis is now ready for receiving the holes, hooks, and rings.

What I claim as my improvement, and desire to secure Aby Letters Patent,is

The dies as herein described for the purpose sot forth. l

JACOB KRITCII. Witnesses;

W. H. BUImIDGn, E. 'E. WAITE; 4

